What is new?
2019/05/08: Registration of PHITS course in OECD/NEA is started (detail)
2019/04/09: Release of PHITS 3.10 and introduction of new export control policy (detail)
2019/03/01: Addition of information about operation environment in "How
to Use" (detail)
2018/12/21: Announcement of PHITS course in OECD/NEA, France (detail)
2018/01/16: Sample user-defined tally for [t-deposit] with outout=deposit
is uploaed (detail)
2018/01/09: Publication on the latest PHITS (Ver.3.02) (detail)
2017/08/24: Lecture notes were updated (detail)
2017/02/02: Registration of PHITS 2.88 in OECD/NEA Databank
2016/12/22: Upload instruction how to use ParaView coupled with PHITS (detail)
2016/09/30: Release of update patch to PHITS2.88(detail)
Log of PHITS information before Aug. 2016. here

What is PHITS?PHITS
(Particle and Heavy Ion
Transport code System) is a general purpose Monte Carlo particle transport simulation code developed under collaboration between JAEA, RIST, KEK and several other institutes. It can deal with the transport of all particles over wide energy ranges, using several nuclear reaction models and nuclear data libraries. PHITS can support your researches in the fields of accelerator technology, radiotherapy, space radiation, and in many other fields which are related to particle and heavy ion transport phenomena. (detail, pdf 9.5MB)

How to refer to PHITS?
Please explicitly write the version of PHITS you used, and refer the following
document in context of using any version of PHITS.
Tatsuhiko Sato, Yosuke Iwamoto, Shintaro Hashimoto, Tatsuhiko Ogawa,
Takuya Furuta, Shin-ichiro Abe, Takeshi Kai, Pi-En Tsai, Norihiro Matsuda,
Hiroshi Iwase, Nobuhiro Shigyo, Lembit Sihver and Koji Niita
Features of Particle and Heavy Ion Transport code System (PHITS) version
3.02, J. Nucl. Sci. Technol. 55, 684-690 (2018).
This is an open access article, and you can download it from
here.

Manual and Update
You can download the latest version of PHITS manual in pdf here.
Update log of PHITS manual is here.
Update log of PHITS is here.

Request PHITS tutorial You can request to organize PHITS tutorial courses outside Japan subject
to following conditions
1, All participants must submit the license agreement form of PHITS prior
to the tutorial
2, All participants should not belong to institutes related to weapon research
3, Organizer (or participants) cover the traveling expense and accomodation
cost of the lecturer (normally one person)
To request for PHITS tutorial, please contact PHITS office.
We are waiting for your request!